Finding the Fourth Proportional to 21,559.72, 32,333.10 and 8,408.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,559.72 : 32,333.10 = 8,408.56 : x
2. Step 2: Convert to fraction form
   21,559.72/32,333.10 = 8,408.56/x
3. Step 3: Cross multiply
   21,559.72x = 32,333.10 × 8,408.56
4. Step 4: Simplify right side
   21,559.72x = 271,874,811.34
5. Step 5: Solve for x
   x = 271,874,811.34/21,559.72
6. Step 6: Final answer
   x = 12,610.31